How to Enable the Compositing under Linux Mint 15

Like under Mint 13, the compositing is not enabled by default. I like to work with transparent terminals, and when the compositing is disabled, we get this:

Compared to Mint 13, enabling the compositing under Mint 15 is different. Under Mint 13, you can enable the compositing in Marco (configuration editor). Under Mint 15, you have to open the Control Center, and click on the Windows icon of Desktop Settings: